Air-cleaning device



June 30, 1925. 1,544,271

0. 'J. NELSON AIR CLEANING DEVICE Filed Nqv. 19, 1923 Jfiz/ezrfoz Oscar Judas/W lson Mw/MMJ Patented June 30, 1925.

UNITED STATES I 1,544,271 PATENT OFFICE.

oscnn JULIUS NELSON, or cnnron, onto, nssrcnon or one-m1- :ro WALTER n.

naononnn, or cnm'on, omo.

AIR-CLEANING DEVICE.

I Application filed November 19, 1923. Serial No. 5,518.

To all whom it may concern:

Be it known that I, OSCAR Junros NEL- SON, a citizen of the United States, residing at Canton, in the county of Stark and State 5 of Ohio, have invented certain new and useful Improvements in Air-Cleaning Devices, of which the following is a specification.

My invention relates to improvements 1n air cleaning devices for hydrocarbon motors, the present embodiment of the inventlon being particularly designed and adapted for use in connection with the air intake portions of carburetors used in connection with such motors.

The primary object of the invention is to provide a generally improved air cleaning or purifying device of the type or class 1ndicated, which will be exceedingly simple 1n construction, cheap of manufacture, and efficient in use- I A further and very important object s the provision of an improved device of this class which does not depend upon a filtermg element or medium for the performance of its functions, as well as one in which the various parts may be readily disassembled for inspection, cleaning out, or repalr.

There are other features of the invention residing in elemental combinations and particular construction of parts, all as will hereinafter more fully appear.

With the above mentioned and other ends in view, the invention consists in the novel construction, arrangement and combination of parts, hereinafter described, illustrated in one of its embodiments in the accompanying drawings, and particularly pointed out in the appended claims.

Referring to the drawings, forming a part of this specification, Figure 1 is a side elevation of an ordinary internal combustion engine of the motor vehicle type equipped with an air cleaning or puri ing device constructed in accordance with this invention.

Fig. 2, an enlarged central vertical longitudinal sectional view of the same, detached from the air inlet portion or conduit leading to the carburetor.

Fig. 3, a transverse or cross sectional view, taken on line 33 of Fig. 2.

Fig. 4, a transverse or cross sectional view of the same, taken on line 4-4 of Fig. 2.

Fig. 5. a cross sectional view taken on line Similar numerals of reference designate like parts throughout all the figures of the drawings.

For the purpose of illustration I have shown my improved air cleaning device in connection with an ordinary or conventional form of internal combustion hydrocarbon engine 1, provided with a crank case 2, with suitable intake and exhaust manifolds 3 and 4, respectively. The carburetor 5, may be of any suitable and convenient form or type and, in the present instance, is provided with an air intake pipe or conduit 6. Associated with engine is the usual fan 7, driven in the usual manner from the engine in maintaining a cooling system for the latter.

Referring now to-the improved air cleaning device to which this invention particularly relates, it will be seen that I provide a conduit or casing made up, in the present instance, of a front or intake section 8, and a rear or suction conduit section 8. As a means of conveniently attaching the body or casing of the improved device, the second section 8 is preferably provided with a depending branch or extension 8", split as at 8, and provided with clamping flanges whereby such extension conduit 8 may be clamped about the intake or suction pipe 6 of the carburetor and connected by means of suitable fastening elements 8, such as screws, bolts, or the like.

As a means of utilizing the flow of air directed rearwardly from the fan 7, the improved device is preferably located directly at the rear of the fan and approximately in the axial plane of the latter. as shown.

It will be seen that the conduit or casing of the device forms in effect an extension of the suction conduit casing of the carburotor. The mouth or air receiving end of the conduit or section may be of any suitable and convenient form but is preferably of flaring or iearwardly converging form, as shown. In the present instance, the rearwardly converging or flaring mouth 8' is formed by means of an annular flange formed as a part of the front or intake section 8 of the conduit.

As a means of intercepting and diverting m I the air through the momentum of such foreign matter and through the d version of such air through the passages, an lnterceptor '9 is provided to guard'the mouth 8 ofthe conduit, said interceptor being preferabl in the form of a conical or bell-shaped mem er, as shown, with the marginal edges of the bell or enlarged open ortion overlapping the rearwardly extending edges of the mouth 8 and spaced therefrom and conjointly therewith forming an intervening reversely directed annular passage 9, opening into the front portion of the conduit.

casing or section 8; The conical or horn shapedv interceptor 9 is provided with a throat or neck portion 9 forming a passage 9 of reduced .area for discharging some of the air and the foreign substances in suspensiontherein at the point of diversion and before the pure portlons of the air are carried through the annular passages 9 through pressure of the incoming air at the frontprovided with a rearwardly extending intake provided with a horizontally extending baflle 10*, so that the air passing rearwardly from the annular passage 9 at the front, as indicated by the arrows, will initially take the first passage below and upon striking the rear end of the section 10 will be diverted upwardl and forwardly after which it passes out o the side ports 10 and into.

the annular pure air circulating chamber or compartment 10.

' tling chamber or compartment 10 and a It will be seen that the walls of the sections 10 and 8 conjointly form a dust setpure air circulatingcompartment 10.

In the present instance, the third section 10 is mounted and connected by means of an annular flange 10, interposed between the flanged portions of the adjacent sections 8 and 8 and connected thereto by means of suitable fastening elements 10, as shown.

Having thus described one of the embodiments of my invention, without having attempted to set forth all the forms in which it may be made, or all the modes of its use, what-I claim and desire to secure by Letters Patent is,"-

1. In an air cleaner, the combination with a conduit including a deflector horn having its bell spaced from and overlapping said conduit and forming conjointly therewith an annular reversely directed passage, said horn, discharging foreign matter from the air at the point of diversion,

.2. In a fluid purifier, a conduit for fluid,

including a flaring intake, a receptacle guarding said flaring intake and provided with constricted diverging passages, one of said passages being of reversely directed an- 'nular form and diverting the fluid in a diannular form and adapted to divert the air in an opposite direction to the initial passage of the air and the other being constricted outwardly therefrom to discharge foreign matter through the momentum thereof at the point of diversion.

4. The combination with a conduit including a flaring mouth at the front and circuitous passages at the rear; of a horn having its bell receiving said flaring mouth and spaced therefrom forming conjointly therewith a reversely extending annular passage communicating with said circuitous passages, said horn having a constricted passage discharging foreign substances at the point of diversion of the air by said horn into said annular passage.

5. In an air cleaner, the combination with a conduit including a deflector overlapping and guarding the mouth of said conduit and conjointly with the latter forming a reversely extending annular passage, said reflector having a constricted opening adapted to discharge foreign matter from the air through the diversion of the latter and the momentum imparted to said for- ,eign -matter, said conduit being provided with circuitous assages forming dust settling and pure alr circulating chambers.

6. In a fluid purifier, a conduit including compartments forming dust intercepting and pure air circulating chambers having circuitous passages, an interceptor guarding the mouth of said conduit and spaced therefrom forming a reversely directed annular passage leading to said dust intercepting and circulating chambers, said interceptor having a converging throat discharging foreign substances as the air is diverted into said reversely directed annular passage.

7. An air intake device for the carburetor of an internal combustion engine, comprising a casing through which the incoming air is passed, including a pure air chamber and an air intercepting chamber communicating therewith, a carburetor connected to said pure air chamber, an intake funnel including a circuitous route for the air in front of said air intercepting chamber, and an outlet passage leading from said funnel for the foreign substances in the air accumulated in said,funnel.

8. The combination with a suction conduit including a. rearwardly converging mouth and circuitous passages at the rear, of a horn shaped interceptor having its bell receiving said converging mouth of the conduit and spaced therefrom forming a reversely extending annular passage therebe-tween communicating with said circuitouspassages, said horn shaped interceptor having a throat portion discharging the foreign substances at the point of diversion of the air by said horn shaped interceptor.

9. In a structure for purifying air passing into a carbureter, the combination with a suction conduit having a discharge portion connected to the carburetor, a deflector guarding themouth of said conduit including a dust discharging passage leading therefrom, an intercepting device forming a dust settling chamber communicating with the discharge portion of said conduit, and a fan for forcing air into and over said deflector, some of the air passing from said deflector into said chamber and the remain-' ing with foreign substances passing outwardly therefrom.

10. In a device of the character described, the combination with a conduit having a flaring mouth initially receiving the fluid to be cleansed, a conical shaped interceptor spaced from andguarding said mouth forming -reversely extending passages and also provided with a discharge port discharging the foreign matter from the air 'through the momentum imparted to the latter as the air is diverted by said interceptor, and circuitous passages in said conduit forming dust settling and pure air circulating portions.

11. In an air intake device for an internal combustion engine, a conduit having a flaring mouth and a deflector spaced therefrom and conjointly therewith forming a reversely directed annular passage, said deflector having a converging portion receiving the initial pressure of the incoming air and diverting foreign substances therefrom through the momentum thereof and the changeiin the course of the air toward said reversely directed passage, and acircuitous compartment forming dust separating and air circulating passages.

12. In a structure for purifying air passing into the carburetor, the combination with a suction conduit connecting to the carburetor including a pure air chamber and an intercepting compartment forming a dust settling chamber, and an interceptor guarding the mouth of said suction conduit including an opening adapted to discharge foreign substances by diversion and momentum. and a fan for forcing the air past said deflector some of the air passing into said deflector being drawn into said conduit and dust settling and pure air circulating chambers.

13. In a device of the character described, a casingv provided with reversely directed overlapping mouth and interceptor mem-' bers at its front, said interceptor being spaced from said mouth member forming a reversely extending annularlpassage and being provided with a converging passage receiving and discharging the foreign matter from the air through the momentum of the foreign matter and as the air is diverted into said reversely extending annular passage, and reversely directed walls forming circuitous passages communicating with said annular passage forming dust separating and pure air circulating portions.

In testimony whereof I have affixed my signature.

OSCAR JULIUS NELSON. 

